maximum number of files: 8 Maximum size: 50MB Supported formats: jpg, jpeg, png, gif, pdf, doc, docx, ppt, pptx, pps, ppsx, odt, xls, xlsx, zip, rar, stl, object, stp, step, iges, igs, CATPart, CATProduct , CATDrawing, cgr, 3dm, model, session, exp, dlv, 3dm